IWC Portugieser Portugieser Constant-Force Tourbillon Double Moon Platinum / Blue
Reference IW5901-03
About this watch
The IWC Portugieser Constant-Force Tourbillon Double Moon is a masterclass in horological innovation, showcasing IWC's commitment to precision engineering and timeless design. The platinum case exudes opulence with its 46mm diameter and 13.40mm height, while the sunburst blue dial radiates elegance and makes time-telling effortless. A robust sapphire crystal protects the watch, ensuring a scratch-resistant finish that shines brightly in varying lighting conditions. Powered by the IWC-manufactured caliber 94800, this hand-wound movement is a testament to horological excellence, featuring a patented constant force mechanism and tourbillon escapement for improved accuracy and performance. The IW5901-03 boasts an impressive power reserve indicator, double moonphase display, and day/night indication feature, making it a truly unique timepiece that combines beauty and functionality.
Buy Now on Jomashop
This is an affiliate link
Key Features
- 46mm platinum case
- IWC-manufactured caliber 94800 movement
- Patented constant force mechanism
- Tourbillon escapement
- 96-hour power reserve
- Double moonphase display
- Day/night indication feature
Specifications
- Brand
- IWC
- Family
- Portugieser
- Model
- Portugieser Constant-Force Tourbillon Double Moon Platinum / Blue
- Reference
- IW5901-03
- Movement
- 94800
- Movement Features
-
- Minutes, Hours, Small Seconds
- Moonphase
- Constant Force Mechanism, Tourbillon Escapement, Power Reserve Indicator
- Case
- 46mm
- Dial Color
- Blue
- Crystal
- Sapphire
- Water Resistance
- 30
Current Listings
IWC Portugieser Automatic 7 Day Power Reserve Reference 500705 Blue Hand & Index
IWC Portugieser Automatic 7 Day Power Reserve with blue hand and index, a men's watch measuring 43mm in size.
- Condition: 95%
- Case Material: 18K Rose Gold
- Movement Type: Mechanical Manual

IWC Portugieser Chronograph - 41mm - Beige Dial - IW371624 ( unworn / 2025 )
Up for sale is an unworn IWC Portugieser Chronograph in 41mm stainless steel, featuring a beige dial and in-house Calibre 69355.
- Condition: Unworn
- Case material: Stainless Steel
- Case size: 41mm
IWC SCHAFFHAUSEN PORTUGIESER CHRONOGRAPH YEAR OF THE DRAGON 41mm IW371629
This IWC Portugieser Chronograph features a red dial and is housed in a 41mm stainless steel case, paired with a black calfskin strap.
- Condition: EXCELLENT
- Material: stainless steel
- Band material: calfskin
- Case size: 41mm

IWC Portugieser Automatic 42.3MM Black Stainless Steel FULL SET MINT IW500703
The IWC Portugieser Automatic is a tribute to the brand's maritime heritage, featuring a stainless steel case and pitch black dial. It has a 7-day power reserve and includes hours, minutes, elapsed seconds subdial, and power reserve indicator.
- Condition: Mint condition with little to no signs of wear
- Case size: 42.3MM
- Water resistance: unknown
- Movement: Automatic

MINT Iwc IW500701 PORTUGIESER 7 DAY POWER RESERVE 18K ROSE GOLD 2024 FULL SET
This is a beautiful 2024 IWC Portuguese 7 Day Power Reserve in 18K rose gold with a silver dial and 41mm case. It comes with a Santoni dark brown alligator leather strap and an 18K rose gold deployant clasp.
- Condition: Mint, unpolished condition
- Case Size: 41mm
- Power Reserve: 7 days
- Warranty Years Remaining: under 8 years

IWC Portugieser Chronograph - 41mm - Blue Rubber - IW371620 ( new / 2024 )
This IWC Portugieser Chronograph features a 41mm stainless steel case, white and blue dial, and comes with an IWC Warranty Card dated November 2024.
- Condition: Unworn condition
- Case size: 41mm diameter
- Movement: In-House Calibre 69355

IWC Portugieser Chronograph - 41mm - Blue Dial - IW371606 ( new / 2024 )
This IWC Portugieser Chronograph features a stainless steel case, in-house Calibre 69355 movement, and blue dial.
- Condition: Unworn
- Case size: 41mm diameter
- Materials: Stainless Steel